======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '532'
                                          'artist'  'Richard Wagner'
                                     'text_people'  ''
                                         'release'  'Fallout 4 OST (Classic radio station)'
                                           'title'  'Faust Overture'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-2', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['opera', 'german', 'composers', 'romantic', 'classical']"
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '28'
                                      'tracktotal'  '29'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'soundtrack-game'
                                             'bpm'  '143.619'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     'Fallout 4 OST (Classic radio station)'
'TBPM' (BPM (beats per minute))                     '143.619'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-game'
'TIT2' (Title/songname/content description)         'Faust Overture'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Richard Wagner'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '28/29'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf53.30.100'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['opera', 'german', 'composers', 'romantic', 'classical']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.49 dB'
'TXXX:replaygain_track_peak'                        '0.563661'

========================== row from database ==========================
                                              'id'  739625
                                            'path'  /data/Music/Bulk/0soundtrack/Fallout 4 - Classical Radio/28. Richard Wagner - Faust Overture.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  532
                                           'genre'  soundtrack-game
                                        'filesize'  8530440
                                           'mtime'  1623433159
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Classical Radio 28. soundtrack game
                                      'tag_artist'  Richard Wagner
                                     'tag_release'  Fallout 4 OST (Classic radio station)
                                       'tag_title'  Faust Overture
                                             'bpm'  143.619
                                    'search_title'  'faust':1 'overture':2
                                   'search_artist'  'richard':1 'wagner':2
                                  'search_release'  '4':2 'classic':4,5 'fallout':1 'ost':3 'radio':6 'station':7,8
                                     'search_rest'  '0soundtrack':1 '28':4,5 'classical':2 'game':7 'radio':3 'soundtrack':6
                                    'search_combo'  '0soundtrack':13 '28':16,17 '4':6C 'classic':8C,9C 'classical':14 'fallout':5C 'faust':1A 'game':19 'ost':7C 'overture':2A 'radio':10C,15 'richard':3B 'soundtrack':18 'station':11C,12C 'wagner':4B
                                    'tag_tracknum'  28
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['opera', 'german', 'composers', 'romantic', 'classical']
                                        'tag_date'  
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1623433158.989971  (2021-06-11 19:39:18)
                             'size'  8530440